Axle Weigh Pad Calibration

The following information is included in our UKAS certificates for weigh pads:

• Title of certificate (“Certificate of Calibration”)
• Name and address of calibration laboratory
• Unique certificate ID (serial number) for each weigh pad
• Page ID
• Client name and address
• Identification of method(s) used: the method we use for all tests and standards used for each test are on the certificate. These include our internal calibration method, the DVSA consolidated code of practise accuracy tests, Eccentricity test to BS EN 45501:2015, out of level test required in the DVSA consolidated code of practice document.
• Date of calibration
• Results with units of measurement
• Name/function/signature of person(s) authorising calibration
• Uncertainty of measurement details
• Evidence that measurements are traceable (UKAS/SI)
• Results to relate only to quantities and functional tests. If the customer chooses a specific option, we provide statement of conformity for the results.
• If the item was adjusted/repaired, before/after calibration results to be reported
• No recommendation of next due date to be issued unless the customer requests this

MWS operates with ISO 9001 and ISO/IEC 17025 traceability in its calibration services, showing adherence to recognised quality and technical standards.

Yes — after calibration, documentation is issued confirming calibration to the appropriate standard, which is useful for audits and compliance purposes.

Our UKAS ISO 17025 certificates show the uncertainty budgets required by the VCA.

Turnaround times can vary. MWS aims for efficient processing to minimise downtime, but exact times depend on workload and the condition of the pads. Contact MWS for current estimates.

Calibrated pads help ensure vehicles aren’t overloaded, maintain compliance with regulations, reduce safety risks, and provide confidence in weight data used for logistics or tax purposes.

Yes — the calibration service is typically performed at the MWS facility (e.g., Leicester), where the specialised test rigs are located.

Pads are placed on MWS’s test rig and loaded up to 10 tonnes of force using a certified load cell kit. Measurements are compared against known standards and adjusted as needed to ensure accurate output.

DIY calibration is not advised. Accurately calibrating heavy axle weigh pads requires specialist equipment and trained personnel to ensure safe and precise results — something MWS technicians are equipped for.

MWS calibrates weighing pads using force rigs tested with a certified reference load cell kit with ISO 17025 certification, and processes to ISO 9001 standards.

It’s industry best practice to have weighing devices calibrated at least annually. Frequent use, environmental conditions, or inconsistent results may require more regular checks.

Regular calibration ensures the pads remain accurate and reliable. This helps prevent overloaded vehicles, supports compliance with legal weight limits, and protects your business from fines or safety risks.

Axle weighing pad calibration is a precision service that tests and adjusts portable axle weighing pads so they provide accurate weight measurements when used on vehicles. MWS uses specialised rigs to apply known loads and verify pad readings to recognised standards.